> For a complete page index, fetch https://docs.synthflow.ai/llms.txt. For full documentation content, fetch https://docs.synthflow.ai/llms-full.txt. # Zoom > Connect Zoom Phone or Zoom Contact Centre to Synthflow AI agents through Zoom's Virtual Agent integration. ![Zoom integration overview](https://storage.googleapis.com/granular-changelog/doc-images/zoom_1.png) This page covers how to install the Synthflow Zoom app, common use cases, and troubleshooting. Both integrations use the same [Synthflow AI](https://marketplace.zoom.us/apps/d-ygMFyzTwu-KQPklkADzA) app from the Zoom Marketplace. Call routing steps differ by integration. See the [Zoom Phone](/sip-with-zoom-phone) or [Zoom Contact Centre](/sip-with-zoom-contact-centre) guide for yours. ## Integrations available Route calls to Synthflow agents via Auto Receptionists. Route contact centre flows to Synthflow agents. ## Prerequisites Confirm the following before you install the Synthflow app or import a phone number. * A Zoom Phone or Zoom Contact Centre license with the **Virtual Agents** add-on enabled. * Admin access to the [Zoom admin portal](https://admin.zoom.us/). ## Installation Install the [Synthflow AI app](https://marketplace.zoom.us/apps/d-ygMFyzTwu-KQPklkADzA) in the Zoom Marketplace, and authorize the requested permissions. A virtual agent entry appears under **Phone System Management > Virtual Agents** in the Zoom admin portal. ![Synthflow AI app in the Zoom Marketplace showing the connections tab](https://storage.googleapis.com/granular-changelog/doc-images/zoom_2.png) ![Zoom Virtual Agents page showing the Synthflow virtual agent](https://storage.googleapis.com/granular-changelog/doc-images/zoom_3.png) ### Copy the integration phone number into Synthflow In the Zoom admin portal, navigate to **Phone System Management > Virtual Agents**. Click the three-dot menu next to your Synthflow virtual agent and select **Copy integration number**. ![Context menu showing Copy integration number option](https://storage.googleapis.com/granular-changelog/doc-images/zoom_4.png) Next, open the Synthflow dashboard and go to **Phone Numbers**. Click **Import Phone Number** and configure the following fields: | Field | Value | | ------------------ | ----------------------------------------------------- | | **Phone Provider** | Custom | | **Phone Number** | The integration number copied from Zoom | | **Friendly Name** | A label such as `Zoom Phone` or `Zoom Contact Centre` | | **SIP Domain** | `156.45.35.193` | | **Username** | Leave empty | | **Password** | Leave empty | | **Outbound Proxy** | `156.45.35.193:5061;transport=tls` | | **Auth Username** | Leave empty | ![Synthflow Import Phone Number dialog with Zoom details](https://storage.googleapis.com/granular-changelog/doc-images/zoom_5.png) Scroll down to confirm the **Origination URI** field. Note the inbound and outbound SIP URIs: * **Inbound (Origination URI):** `sip:sip.synthflow.ai:`, the address Zoom sends calls to. Synthflow auto-populates this field. * **Outbound (Outbound Proxy):** `156.45.35.193:5061;transport=tls`, used for any outbound routing. ![Synthflow Import Phone Number dialog showing the Origination URI](https://storage.googleapis.com/granular-changelog/doc-images/zoom_6.png) Click **Import** to save the number. ### Assign the number to an agent After the phone number is imported, attach it to the agent that should handle incoming Zoom calls in the [agent editor](/the-agent-editor), under **Deploy**. One phone number can be assigned to one inbound agent at a time. If you need to reassign the number, remove it from the current agent first. For more on number management, see [Phone numbers](/about-phone-numbers). Then complete product-specific routing on the [Zoom Phone](/sip-with-zoom-phone) or [Zoom Contact Centre](/sip-with-zoom-contact-centre) guide. ## Use cases ### Inbound call handling Once configured, incoming calls routed from Zoom are forwarded to your Synthflow AI agent. The agent answers calls, follows its configured prompt, and can perform any actions you attach (transfers, booking, data collection). ### Call transfers **Transfer limitation:** Zoom call transfers can only route to other Zoom numbers using SIP URI addressing. PSTN transfers to standard phone numbers outside Zoom are not supported. To configure a [call transfer](/call-transfers) for Zoom: 1. In the Synthflow dashboard, open or create a **Call Transfer** action. 2. Under **Transfer to**, select **SIP URI**. 3. Enter the SIP URI in the format `sip:@:5061`, where `` is a dynamic variable that resolves to the Zoom media IP at call time. 4. Under **SIP Headers**, click **+ Add** and add a header with the name `X-tls` and the value `1`. 5. Save the action and attach it to your agent. ### Call recordings and transcripts Call recordings and transcripts are available in the Synthflow dashboard under the agent's call history, the same as any other Synthflow call. ## Troubleshooting If calls are not reaching your Synthflow agent after completing the setup: * Verify that the integration number copied from Zoom matches the phone number entered in Synthflow exactly. * Confirm that Zoom routes calls to the Synthflow virtual agent. Routing steps differ by integration. See [Zoom Phone](/sip-with-zoom-phone) or [Zoom Contact Centre](/sip-with-zoom-contact-centre). * Check that the SIP domain is `156.45.35.193` and the outbound proxy is `156.45.35.193:5061;transport=tls`, with username, password, and auth username left empty. * Ensure your Synthflow agent is on version 2.0 and has the imported Zoom number attached. * If the virtual agent does not appear in Zoom after installing the app, remove and reinstall [Synthflow AI](https://marketplace.zoom.us/apps/d-ygMFyzTwu-KQPklkADzA), then check **Phone System Management > Virtual Agents** again. ## Uninstall To disconnect Synthflow from your Zoom account: 1. Open the [Zoom App Marketplace](https://marketplace.zoom.us/) and go to **Manage > Added Apps**. 2. Find **Synthflow AI** and click **Remove**. 3. Confirm the removal when prompted. After removing the app: * The Synthflow virtual agent entry is deleted from **Phone System Management > Virtual Agents** in Zoom. * Any Zoom routing still pointing to the Synthflow virtual agent will stop working. Update [Zoom Phone](/sip-with-zoom-phone) Auto Receptionist rules or [Zoom Contact Centre](/sip-with-zoom-contact-centre) flows to route elsewhere. * The imported phone number in Synthflow becomes inactive. You can delete it from the **Phone Numbers** page in the Synthflow dashboard. * Synthflow retains call logs and recordings made before removal in accordance with its [data retention policy](https://synthflow.ai/privacy). To request deletion of your data, contact [support@synthflow.ai](mailto:support@synthflow.ai). ## FAQ Use [Zoom Phone](/sip-with-zoom-phone) if you run business phone lines and route calls through Auto Receptionists. Use [Zoom Contact Centre](/sip-with-zoom-contact-centre) if you operate contact centre flows and want AI handling inside those flows. No. Both integrations use the same Synthflow AI app from the Zoom Marketplace. Install it once per Zoom account. Set the SIP domain to `156.45.35.193` and the outbound proxy to `156.45.35.193:5061;transport=tls`. Leave the username, password, and auth username fields empty. No. Zoom can only transfer to other Zoom numbers via SIP URI. Configure your call transfer action to use the **SIP URI** option with the format `sip:@` and add an `X-tls` SIP header with value `1`. See [call transfers](#call-transfers) for full setup steps. Synthflow retains call logs and recordings made before removal per its data retention policy. To request deletion, contact [support@synthflow.ai](mailto:support@synthflow.ai).